president barack obama and presidential nominee mitt romney are crisscrossing the country. they're meeting with potential voters, going on tv shows, posing for pictures and campaigning in front of crowds. there will be a lot of that, especially in swing states where it's uncertain which candidate is likely to win. the campaigns are buying up ad space so you'll see more commercials on more channels and their running mates are doing all they can to get supporters to vote. at this point, it's anyone's guess who will win the election. a cnn political reporter say americans will wake up on election day not knowing who their next president will be. it makes the campaigning the presidents do between now and election day even more significant. >>> our next story takes us to italy. some people in the scientific world are stunned about a court case that just wrapped up there. six scientistes and a government official had been convicted on charges. this goes back to an earthquake. the court ruled that these scientists didn't do enough to warn people that there was an earthquake risk.